1 definition by Jack Nabio

Named after the infamous Prussian, the Bismarck is a sexual act where the man, after ejaculation in his partner's mouth, pulls out and proceeds to slap his partner's face with his wet and sticky penis. Bonus points are awarded on the loudness of the smack.
After that bitch gave me head, I totally gave her the Bismarck.
by Jack Nabio April 05, 2006

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